Linux: Let your program run as background service

In this post you will learn how to convert your headless Linux program to a service running in the background. Here with headless is meant a program without user interaction and without graphical user interface (GUI). Assumed is that you are running a Linux distribution with Systemd enabled, like Ubuntu 15.10. In the example below,… Continue reading Linux: Let your program run as background service

Parallel bash scripts – waiting for completion

Assume we would like to execute several independent tasks in parallel and we would like to wait till these tasks are completed. For example we would like to copy a set of files to several (remote) hosts and get a signal when we are ready with this copying task to ALL hosts so we can… Continue reading Parallel bash scripts – waiting for completion

Add your picture to Google search results – Rich snippets

Maybe you noticed the fancy Google search results containing profile pictures already. When you don’t have a clue what I mean, you can find an example of a Google Search rich snippet at the top of this article. Pretty neat don’t you think? What are you thinking.. you do want to have the same fancy… Continue reading Add your picture to Google search results – Rich snippets

Raspberry Pi: Raspbian – Modify image

In this post you will learn how to make some (tiny) changes in the Raspbian SD card image before writing it on the micro SD card. Assumptions You downloaded a Raspbian image (i.e. 2015-11-21-raspbian-jessie.img) You are using a computer running Ubuntu (or other linux distribution) Mount Raspbian partition You need to mount the Raspbian partition… Continue reading Raspberry Pi: Raspbian – Modify image